DQJMHSEN Cooling pad: Designed to fit up to 15.6" Office Laptops,stay comfortable. While you work with this pad that features 2 fans to help keep your laptop cool and open edges for optimal airflow. The flip-up little stopper hold your laptop securely in place. Big motor 1400RMP speed:Our innovative design utilizes two 140mm high quality fans to provide ample cooling to your Notebook . Capable of providing over 30 cubic feet per minute of refreshing air flow, you will never feel the heat from your laptop ever again. Ergonomic Comfort metal stand 4 heights : A better comfortable typing angle (up to 45deg) to relieve wrists & shoulder aching after long-time mouse&keyboards exercise. meshed metal surface Excellent embedded iron-cover makes sure No more Scratches. Solid Metal stand 6-heights is fodable and easy to carry and keep. Two USB Ports: This cooling laptop pad is conveniently powered by the USB port on your computer. It offers an additional USB port for you to connect other devices. whisper quiet fan technology : Our cooling stand can also be used as a Laptop or Desktop Monitor Stand. Built into the top of our cooling stand is a retractable monitor stand, that allows you to position the screen at eye level, for a more relaxed reading position. Specification Dimensions: 345mm L x 250mm W x 40mm H DC Fans' Sizes: Total of 2fans @ 140mm L x 140mm W Rated voltage: 5V DC USB Ports: 2 Material: metal mesh USB cable length: 60cm Life/MTBF: 10,000 hours